Auto-Parametric Stability And Post-Critical Behavior of a Non-Linear Continuous System Under Random Seismic Excitation

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Auto-Parametric Stability And Post-Critical Behavior of a Non-Linear Continuous System Under Random Seismic Excitation

Popis výsledku v původním jazyce

Easily deformable tall structures exposed to a strong vertical component of an earthquake excitation are endangered by auto-parametric resonance effect. This non-linear dynamic process in a post-critical regime caused heavy damages or collapses of many towers, bridges and other structures in the epicenter area. Vertical and horizontal response components are independent on the linear level. However their interaction takes place due to non-linear terms in post-critical regime. Two different types of thepost-critical regimes are presented: (i) post-critical state with possible recovery; (ii) exponentially rising horizontal response leading to a collapse, when the irreversibility limit is overstepped. A special attention is paid to system parameters sensitivity to reaching the semi-trivial solution stability as well as the limit of the irreversibility. Solution method combining analytical and numerical approaches is developed and used.

Název v anglickém jazyce

Auto-Parametric Stability And Post-Critical Behavior of a Non-Linear Continuous System Under Random Seismic Excitation

Popis výsledku anglicky

Easily deformable tall structures exposed to a strong vertical component of an earthquake excitation are endangered by auto-parametric resonance effect. This non-linear dynamic process in a post-critical regime caused heavy damages or collapses of many towers, bridges and other structures in the epicenter area. Vertical and horizontal response components are independent on the linear level. However their interaction takes place due to non-linear terms in post-critical regime. Two different types of thepost-critical regimes are presented: (i) post-critical state with possible recovery; (ii) exponentially rising horizontal response leading to a collapse, when the irreversibility limit is overstepped. A special attention is paid to system parameters sensitivity to reaching the semi-trivial solution stability as well as the limit of the irreversibility. Solution method combining analytical and numerical approaches is developed and used.

Druh

D - Stať ve sborníku

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proc. 15th World conference of Earth Engineering

ISBN

978-989-20-3182-8

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

Portuguese Society for Earthquake Engineering

Místo vydání

Lisabon

Místo konání akce

Lisabon

Datum konání akce

24. 9. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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